Window-sash.



No. 887,968. mmslvtrn .MAY 19, .1908., 5. vv. SELKIRK. WINDOW sAsH.

APPLIUATION FILED 001223. 1907.

,2f/2a I y /Z l 5 UNITED sTATEs PATENT oEEioE.

No. 887,968. Specification of Letters Patent. Patented May 19, 1908.

Application led October 23, 1907. Serial No. 398,821. X

as to cause them to bear against the side To all whom it may concern.'

edges of the strips 12, 13.

Be it known that I, EDWARD W. SELKIRK,

a citizen of the Umted States, and resident A bearing plate 25 preferably of metal is of the city of Chicago, county of Coolgand l interposed between the block 17 and the Y State of Illinois, have invented certain new spring 19, covering the recess 23 and overlap` 60 and useful In rovements in Window-Sashes,

of which the fhllowing is a specification, and tire block is urged outwardly by the spring.

which are 'illustrated in the accompanying Preferably this bearing plate 25 is provided drawings, forming a part thereof. with inturned flanges at two of its edges, as

The invention relates particularly to means shown at 26, 27 which enter their suitable 65 for lubricating' runways of window sashes registering grooves 28, 29 and 30, 31 cut andwhile being applicable to windows in any across the inner face of the several elements situation is of more especial value in conofthe block, thereby maintaining' the plate nection with windows of railway cars. in its proper position while allowing the free The invention consists in the structure movement of the side elements under the in- 70 hereinafter described and which is illustrated iiuence of the spring 24. in the accompanying drawings, in which The lubricating block having been placed Figure 1 is a detail elevation of a window in its pocket and the sash properly hung the sash and casing some portions being broken aWay to show the internal construction Fig. 2 is a detail on the line 2`2 of Fig. 1 Fig. 3 is a detail section on the line 3`3, of Fig. 1,' Figs. 4 and 5 are perspective views of elements of the lubricating block; and

Fig. 6 is a perspective of a clamp to secure the lubricating elements together.

A part of the frame of a window sash is represented at 10, a part of a window casing at 11, the usual strips applied to the window casing to form the runway for the sash are shown at 12, 13. A recess is formed in the edge-face of the sash, as shown at 14, this recess extending entirely across the sash and being of a depth not exceeding the thickness of the strips 12, 13. The side walls 15, 16 of this recess are parallel. Within the recess 14 there is seated a block 17 of solid lubricant, such as graphite or soapstone and back of this block, housed within the recess 18 in the window sash there is located a sprin0r 19, shown as being f wire wound in helica form for forcing the block outwardly and y causing it to bear against the face of the casing 11. The block 17 is sectional being composed of three elements 20, 21, 22 oblong rectangular in shape and lying side by side. The two outer elements 20 and 22 are identical in form and only one of them is therefore illustrated in detail. The central element 21 is transversely recessed across its tinuously lubricated, thereby preventing the material being such that i-t will not rapidly wear away and will not be greasy, in order that it may not cause an accumulation of dirt.

I claim as my invention` 1. In combination, a window sash having a recess in its side edge and a spring projected lubricating body seated within the recess. 35 2. In combination, a window sash having a recess in its side edge, a sectional block of lubricating material seated within the recess, means for expanding the block laterally and means for urging the block outwardly. 3. In combination, a window sash having expansion spring seated within the recess of outer sections, and an expansion spring back of the block and urging it outwardly.

4. In combination, a window sash having a recess in its side edge, a sectional block of lubricating material located within the recess, a bearing plate back of the block and overlapping its several sections and an eX- pansion spring reacting between the bearing plate and the bottom of the sash recess.

5. In combination, a window sash having recess is located an eX ansion spring 24, also a recess in its side ed e, a sectional block of shown as being in he 'cal form, this spring lubricating material ocated within the rebearing against the inner faces of the elecess, a bearing plate back of the block and 55 ments 20 and 22 and forcing them apart so overlapping its several sections and an eX- 110 ansion spring reacting between the bearing plate and the bottom of the sash recess, the several sections oi the block being transversely grooved, the plate having iianges iitting within said grooves.

6. ln combination, a window sash having a recess in its side edge, a lubricating block set within said sash recess and comprising an inner and a pair of outer sections, the inner section being transversely recessed, an eX- pansion spring located' within the recess oi the inner section and bearing against the outer section, a bearing plate at the back of the recess oi its central section, and overlapping its outer sections, and a spring located between the bearing plate and the bottom oi the sash recess.

7.4 ln combination, a window sash having a recess in its side edge, a lubricating block set within said sash recess and comprising an inner and a pair oi outer sections, the inner section being transversely recessed, an eX- pansion spring located within the recess of the inner section and bearing against the outer sections, a bearing plate at the back oi the block to cover the recess oi its central section, and overlapping its outer sections, and

a spring located between the bearing plate and the bottom of the said recess, the severa sections of the block being transversely grooved and a wear plate having flanges fitting within said grooves.

EDWARD W. SELKlRK. Witnesses:

Louis K. GILLsoN,

MAY G. FITZsIMMoNs. 

